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球阀的区别，ball valve 和globe valve_百度知道

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Category: Apparel Clothing

球阀的区别，ball valve 和globe valveball valve指内部关断装置是一个中间通孔的球。BALL这里理解成滚珠比较直观。ball valve的外观很紧凑，如同稍微加大了直径 ...